JP2002357884A - Method and device for winding photographic film and film carrier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the surfaces of a film wound around a winding shaft from rubbing against each other. SOLUTION: A leading end guide 46 and a contact guide 49 are arranged around the winding shaft 45 having the outer peripheral part which is lined with rubber. Pressure rollers 47 and 48 are arranged in the contact guide 49. The guide 49 is arranged adjacent to an overlapping position (θ=0) where the photographic film 16 is wound and the leading end 16a of the photographic film 16 overlaps with the film 16 after going around the winding shaft 45. By setting the circumferential velocity V2 of the winding shaft 45 higher than the feeding velocity V1 of the photographic film 16, the photographic film 16 is wound around the winding shaft 45 without causing sagging until the leading end 16a of the photographic film 16 passes through the contact guide 49. The sagging of the film is prevented so that the surfaces of the film are prevented from rubbing against each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic film winding method and apparatus, and a film carrier.

[0002]

2. Description of the Related Art A film cartridge conforming to the IX240 standard stores a photographic film (for example, a negative film), which has been subjected to a development process, by winding it around a spool shaft in the cartridge without cutting it. When printing an image recorded on a negative film on a recording material such as photographic paper or thermal recording paper, the cartridge is set on a film carrier and the negative film is pulled out of the cartridge. The negative film pulled out of the cartridge is intermittently conveyed, and each photographed frame image is positioned at a predetermined image reading position or printing position. At the image reading position or the printing position, light is emitted from the light source toward the negative film for a predetermined time, and the transmitted light is used to read or print the image.

However, a negative film, which is wound around and accommodated on a spool shaft in a cartridge, has a certain degree of curl. For this reason, the negative film pulled out from the cartridge may be entangled with the cartridge, or the negative film after the printing operation may not be smoothly rewound when rewound into the cartridge, and the negative film may be damaged such as bent. Therefore, in the film carrier described in Japanese Patent Application Laid-Open No. H8-6168, a film accommodating portion is provided for accommodating the negative film drawn from the cartridge by winding it on a take-up shaft, and the negative film is wound when the negative film is wound. The take-up shaft is rotated in the film take-up direction at a take-up speed higher than the transport speed, and the negative film is taken up on the take-up shaft with substantially uniform tension.

[0004]

However, in the above-described film carrier, when the negative film is wound around the winding shaft, the negative film is wound around the winding shaft at least one turn and then tightened. There is a problem that the surfaces of the film are rubbed and damaged. Such scratches are particularly problematic in the case of a 135-type photographic film having no leader portion and starting an image immediately from the front end of the film.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and when the negative film is wound around the winding shaft, the surface of the negative film rubs against the winding shaft or the second negative film. It is an object of the present invention to provide a film winding method and apparatus and a film carrier which are prevented from being damaged.

[0006]

In order to achieve the above object, in the method for winding a photographic film according to the present invention, when the photographic film is wound around a winding shaft, the leading end of the photographic film has one winding shaft. The photo film is wound around the winding shaft without slack before being wound around and wound on the photo film. In addition,
The winding of the photo film on the take-up shaft is performed by a close-contact guide, and the exit of the photo film of the close-contact guide is set at a winding position where the leading end of the photo film goes around the take-up shaft and is wound on the photo film. Closed, while the peripheral speed of the winding shaft is set to be larger than the feed speed of the photo film, while the tip of the photo film passes through the close contact guide,
Preferably, the photographic film is wound around a winding shaft up to the winding position. Further, it is preferable that the leading end of the photographic film is guided toward the close contact guide by a leading end guide of the photographic film that is arranged apart from the peripheral surface of the winding shaft.

In the photographic film winding device of the present invention,
The leading end of the photo film is disposed close to a winding position where the photo film is wound around the winding shaft around the winding shaft, and the photo film is pressed against the peripheral surface of the winding shaft to be in close contact with the photo film and wound. The guide and the winding shaft are rotated at a peripheral speed higher than the feed speed of the photo film, and the speed difference causes the photo film to reach the winding position while the leading end of the photo film passes through the close contact guide. A take-up shaft drive section for winding the close-contact with the take-up shaft;
A leading end guide that is disposed apart from the peripheral surface of the winding shaft and guides the leading end of the sent photographic film to the close contact guide.

The feed speed of the photographic film is V1
When the peripheral speed of the winding shaft is V2, the angle from the winding position to the contact pressing start position by the close contact guide is θ1, and when the photographic film is wound around the winding shaft from the winding position, When the angle to the leading end of the photo film is θ2, the radius of the winding shaft is R, and the distance between the film guide surface of the leading end guide and the peripheral surface of the winding shaft in the radial direction of the winding shaft is L. In addition, the positional relationship between the winding shaft, the close contact guide, and the tip guide is expressed by the following equation (V2 × L) / (V2−V1) = R × (θ2−θ1) /
It is preferable to satisfy θ1, θ1 <θ2 <360 °.

The close contact guide includes first and second pressing rollers that resiliently contact the take-up shaft and are spaced apart in a circumferential direction of the take-up shaft. It is preferable that the first pressing roller is disposed near the start position of the close contact pressing to the shaft, and the second pressing roller is disposed near the end position of the close contact pressing of the photographic film to the winding shaft by the close contact guide. Further, it is preferable that the winding shaft drive unit has a torque limiter that idles when the winding load increases. Further, it is preferable that the winding shaft drive unit has a one-way clutch between the torque limiter and the winding shaft. Further, the film carrier of the present invention is characterized in that the above-mentioned photographic film winding device is used.

[0010]

FIG. 1 is an external view of a film carrier according to the present invention. This film carrier 10
Attached to a printer processor (not shown) that creates photographic prints. In the printer processor, first, a photograph frame image recorded on a photo film (hereinafter, referred to as a film) is printed on photographic paper. Next, a series of development processes such as color development, bleach-fixing, washing with water, and drying are performed on the photographic paper to produce a photographic print.

The film carrier 10 comprises a pedestal 11, a cover 12, a film accommodating section 13, and the like. The film carrier 10 is compatible with a IX240 standard film cartridge 15 and a 135 size film 16, and includes a cartridge loading section 17 for loading the IX240 standard film cartridge 15 and 135.
A film insertion part 18 for inserting a film 16 of a size is provided.

Film transport paths 21 and 22 corresponding to the respective film widths are provided between the cartridge loading section 17 and the film insertion section 18 and the film accommodating section 13.
Are formed between the base 11 and the cover 12. Exposure openings 23 and 24 for printing photographed frame images recorded on the film onto photographic paper are provided at predetermined positions of the film transport paths 21 and 22, respectively, in the base 11 and the cover 12.

The film carrier 10 is movable in the direction of arrow A on the printer processor. When printing an image recorded on a film 25 conforming to the IX240 standard, the exposure opening 23 is set on the optical axis, and a 135-size film is set. When printing an image recorded on the film 16, the exposure aperture 24 is set on the optical axis. The photographed frame image recorded on the film is positioned at the exposure openings 23 and 24 by the film transport mechanism 30 shown in FIG. When the photographed frame image is positioned in the exposure openings 23 and 24, light is emitted from a light source of the printer processor for a predetermined time, and the image is printed on photographic paper.

As shown in FIG. 2, the film transport mechanism 30
Has a transport roller 33 for transporting a 135-size film 16 and a transport roller 34 for transporting an IX240 standard film 25. These rollers 33 and 34 are arranged three by three in the film feed direction. ing.
The number of rollers 33 and 34 may be any number, and may be increased or decreased as appropriate.

The transport rollers 33 and 34 are rotatably provided on the pedestal 11 (see FIG. 1). Each transport roller 33,
Numerals 34 are arranged opposite to the side edges of the films 16 and 25, respectively, and these are connected by a shaft 40. The pedestal 11 is provided with a transport motor 37, and an endless belt 41 is wound around a drive shaft 37 a of the transport motor 37 and each shaft 40. The driving force of the transport motor 37 is transmitted to each of the transport rollers 33 and 34 via the endless belt 41, and is transmitted to each of the transport rollers 33 and 34.
To rotate.

On the other hand, nip rollers 35 and 36 are rotatably provided on the cover 12 (see FIG. 1). The nip rollers 35, 36 are arranged to face the transport rollers 33, 34, and hold both side edges of the films 16, 25 between the transport rollers 33, 34. These transport rollers 33
The nip roller 35 constitutes a 135-size film transport path 22, and the transport roller 34 and the nip roller 36 constitute an IX240 standard film transport path 21. When the transport motor 37 rotates, the film 16 or the film 25 is transported in the direction of arrow C.

Although not shown, the 135-size film transport path 22 is provided with a film leading edge detection sensor, a perforation sensor, an edge sensor for each frame, and the like. Then, 135 based on the detection signal of the edge sensor.
Each frame of the size film 16 is positioned at the exposure opening 24. Further, a magnetic head and a perforation sensor are provided in the film transport path 21 of the IX240 standard. The magnetic head reads various information recorded on the magnetic recording layer of the film 25 while the film 25 is being transported, and writes print information and the like. The perforation sensor detects a perforation formed at a predetermined position of the film 25. Each frame of the IX240 standard film 25 is positioned in the exposure opening 23 based on the detection signal of the perforation sensor. After this positioning, the image of each frame is printed on photographic paper. The films 16 and 25 that have been baked are sequentially stored in the film storage unit 13.

As shown in FIG. 1, a cartridge loading section 1 is provided at the entrance side of the IX240 standard film transport path 21.
7 are provided. As shown in FIG. 2, the pedestal 11 is provided with a cartridge lid drive shaft 31 and a spool drive shaft 32 at a position corresponding to the cartridge loading unit 17. The cartridge cover drive shaft 31 engages with the opening / closing shaft 15a of the film cartridge 15, rotates in the direction of arrow B, opens the cartridge cover 15b when feeding out the film 25, and moves the film 25 to the spool shaft 15c.
When the cartridge has been completely wound, the cartridge lid 15b is closed.

The spool drive shaft 32 is rotatable in the direction of arrow B.
c. The spool drive shaft 15c is connected to a motor 38, and is rotated by the drive of the motor 38 to send out the film 25 from the film cartridge 15 and to feed the film 25 to the film cartridge 15.
Take-up.

A torque limiter 39 is provided between the spool drive shaft 32 and the drive shaft 38a of the motor 38.
The torque limiter 39 idles when a load exceeding a certain level is applied during film feeding or film winding.

FIG. 3 is a cross-sectional view of a main part of the film accommodating section 13, and shows a cross section taken along line III-III in FIG. Hereinafter, the storage of the 135-size film 16 in the film storage unit 13 will be described, but the storage of the IX240 standard film 25 is performed in the same manner. The film accommodating portion 13 includes a winding shaft 45, a leading end guide 46, pressing rollers 47 and 48, a close contact guide 49, and the like.

The winding shaft 45 is composed of a shaft main body 51 disposed parallel to the width direction of the film 16 and a rubber lining portion 52 lined on the outer peripheral surface of the shaft main body 51. Winding shaft 45 having this rubber lining 52
Is R. The cross section of the inner surface of the tip guide 46 is formed in a substantially arc shape, and the distance between the inner surface and the peripheral surface of the winding shaft 45 is L. Press roller 4
Reference numerals 7 and 48 are rotatably supported by the close contact guide 49, and are provided so that the outer peripheral surface thereof slightly projects from the inner surface of the close contact guide 49. A spring 53 is provided on the rear surface of the close contact guide 49, and the spring 53 constantly urges the close contact guide 49 and each of the pressing rollers 47 and 48 toward the peripheral surface of the winding shaft 45. Note that the number of the pressing rollers 47 and 48 may be appropriately increased or decreased.

The transported film 16 and the take-up shaft 45
The angle to the pressing roller 47 is θ1 in the clockwise direction based on the leading end winding position (θ = 0) at which the leading end 16a of the film 16 is sandwiched between the film 16 and the winding surface 45 of the film 16. The angle to the leading end position of the film when tightened is θ2, the transport speed of the film 16 is V1, and the winding shaft 45 is
Assuming that the peripheral speed at the time of winding is V2 (V1 <V2), these relationships are expressed by the following equations. Note that θ1 <θ2 <36
0 °.

(V2 × L) / (V2−V1) = R × (θ2−θ1) / θ1 (1)

Here, the above equation (1) is obtained as follows. When the film 16 is fed into the film accommodating portion 13, the leading end 16 a of the film is guided by the leading end guide 46 and is conveyed along the peripheral surface of the winding shaft 45 toward the close contact guide 49. When the film 16 is further fed, the film tip 16a is conveyed toward the pressing roller 47 in the close contact guide 49 (indicated by a two-dot line in the figure).
It is held between the peripheral surface of the winding shaft 45 and the pressing roller 47.

At this point, the film 16 is wound on the winding shaft 45.
And is loose without being closely attached to the peripheral surface, and the amount of slack F is: F = 2π × (R + L) × θ1 / 360−2π × R × θ1 / 360 (2)

The film 16 that has passed through the pressing roller 47
Is guided by the close contact guide 49 and is conveyed without leaving the peripheral surface of the winding shaft 45. For this reason, the film 16 is wound around the winding shaft 45 in order for the film 16 to be in close contact with the winding shaft 45 until the film tip 16a makes one revolution around the winding shaft 45, that is, to fasten the film 16 around the winding shaft 45. Assuming that the time until the tightening is t, the following relationship may be established: V2 × t = V1 × t + F (3) (V2 × t) is the film 16
Of the film when the roll is tightened and the pressing roller 47
(V1 × t) is the length of the film 16 that is further fed into the film accommodating section 13 until the film 16 is tightly wound.

The distance (V2 × t) is also represented by the following equation: V2 × t = 2π × R × (θ2-θ1) / 360 (4)

From the equations (2), (3) and (4), the above equation (1) is obtained. By setting each part so as to maintain the relationship between the velocities V1 and V2 and the angles θ1 and θ2 expressed by the equation (1), the film tip 16a is fed into the film accommodating part 13 as shown in FIG. Before being sandwiched between the coming film 16 and the peripheral surface of the take-up shaft 45, the film 16 located on the side of the leading end guide 46 also closely adheres to the peripheral surface of the take-up shaft 45 without loosening. Thus, when the film 16 is tightened around the winding shaft 45, the film surfaces do not rub against each other, and the film is not damaged.

As shown in FIG. 5, a torque limiter 55, a one-way clutch 56, a winding motor 57, and the like are connected to the winding shaft 45. The driving force of the winding motor 57 is controlled by a driving pulley 58, an endless belt. The power is transmitted to the winding shaft 45 via a pulley 59, a pulley 60, a torque limiter 55, and a one-way clutch 56.

The one-way clutch 56 includes a pair of clutch cylinders 56a and 56b. When the winding motor 57 is rotated to rotate the winding shaft 45 in the film winding direction E, the one-way clutch 56 has a pair of clutch cylinders 56a and 56b. 56b rotates integrally, and transmits the drive of the winding motor 57 to the winding shaft 45. When the film 16 is pulled out from the winding shaft 45, the inner clutch cylinder 56a idles with respect to the outer clutch cylinder 56b, so that only the winding shaft 45 rotates.

The torque limiter 55 includes a winding motor 57
When the take-up shaft 45 rotates in the winding direction E of the film 16, when a load exceeding a certain level acts, the film idles and the film transport speed and the film winding speed are synchronized. Thus, the film 16 can be wound around the winding shaft 45 while giving an appropriate substantially constant tension to the film 16.

Next, the operation of the above configuration will be described.
When the film cartridge 15 is loaded in the cartridge loading section 17, first, the cartridge cover drive shaft 31 engages with the opening / closing shaft 15a of the film cartridge 15 and rotates to open the cartridge cover 15b. Next, the spool drive shaft 32 rotates by engaging with the spool shaft 15 c, and sends out the film 25 to the film transport path 21. In the case of the 135-size film 16, when the film leading end 16a is inserted from the film inserting portion 18, the film leading end sensor detects this and the transport motor 37 rotates. As a result, each of the transport rollers 33 and 34 rotates, and the film 16 is rotated.
Is drawn into the film transport path 22.

The films 16 and 25 are transported by rollers 33 and
The sheet is conveyed toward the film accommodating section 13 while being held between the nip roller 34 and the nip rollers 35 and 36. Film transport mechanism 3
In the case of the film 25 conforming to the IX240 standard, if a perforation corresponding to the first photographing frame is detected, the photographing frame image is positioned at the exposure opening 23 and the transport is stopped. When the photographed frame image is positioned in the exposure opening 23, light is irradiated from the light source toward the film 25 for a predetermined time, and the image is printed on the photographic paper. When the printing is completed, the film transport mechanism 30 transports the film 25 again. When the perforation corresponding to the second photographing frame is detected, the photographing frame image is positioned in the exposure opening 23 and the image is printed on photographic paper in the same manner as described above. In this manner, the transport and the printing of the film 25 are repeated until the printing of the predetermined photographed frame image is completed. Similarly, in the case of the 135 size film 16, each frame of the 135 size film 16 is sequentially positioned in the exposure opening 24 based on the detection signal of the edge sensor, and the image is printed on the photographic paper.

The films 16 and 25 conveyed to the film accommodating section 13 after the completion of the printing are wound on a winding shaft 45. As shown in FIG. 3, at the time of starting winding, the transported film tip 16 a is guided by the leading end guide 46 along the peripheral surface of the winding shaft 45 while being brought into close contact with the guide 49.
Conveyed toward. The leading end 16a of the film is further guided by the close contact guide 49 and is conveyed toward the pressing roller 47, and is held between the peripheral surface of the winding shaft 45 and the pressing roller 47.

The film 16 having passed through the pressing roller 47
Is transported by the close contact guide 49 and the pressing roller 48 without leaving the peripheral surface of the winding shaft 45. At this time, since the winding speed is set to be faster than the transport speed, when the film leading end 16a is sandwiched between the film 16 transported to the film storage unit 13 and the peripheral surface of the winding shaft 45, the film is fastened. In this case, the film 16 in the film accommodating portion 13 is in close contact with the winding shaft 45 without loosening, so that the film surfaces are not rubbed and the film is not damaged.
After the film 16 is tightened, the film 16 is wound around the winding shaft with a substantially constant tension by a torque limiter 55 connected to the winding shaft 45.

When the printing of the predetermined photographed frame image is completed, the film transfer mechanism 30
, The film 16 is pulled back. At this time, the spring 53
Always presses the pressing rollers 47 and 48 and the close contact guide 49 toward the winding shaft 45, so that the film 16 wound around the winding shaft 45 does not become loose. In the case of the IX240 standard film 25, the film 25 is wound into the film cartridge 15 in addition to the film transport mechanism 30 pulling the film back from the film accommodating section 13. When the entire film 25 is wound on the spool shaft 15c, the cartridge cover drive shaft 31 rotates and the cartridge cover 15b is closed.

In the above-described embodiment, an example has been described in which the film carrier is a dual-purpose film carrier for the 135 size film 16 and the IX240 standard film 25. However, the present invention is not limited to this, and the 135 size film 16, the IX240 standard film 25, The present invention may be applied to a film carrier dedicated to each size such as a brownie size.

Further, in the above embodiment, an example is described in which the film carrier of the present invention is used in a printer processor for printing an image recorded on a film on photographic paper. The present invention can also be applied to an image reading device that reads by reading. As the image reading method in this case, the method of intermittently transporting the film and reading the image for each frame as in the above-described embodiment, the method of continuously feeding the film in the sub-scanning direction, and arranging the film in a line in the main scanning direction. Any method of reading an image in synchronization with film transport by the image sensor may be used.

Further, the present invention can be applied to not only a film carrier but also various kinds of apparatuses which need to wind a photographic film.

[0041]

As described above, according to the film carrier of the present invention, when winding the photographic film around the take-up shaft, the leading end of the photographic film is wound around the take-up shaft and wound around the photographic film. Since the photographic film is previously wound around the winding shaft without slack, there is no occurrence of scratches caused by the films at the leading end of the film when the film is tightly wound around the winding shaft as in the related art. Therefore, in the case of a film on which an image is recorded from the leading end of the film, for example, a 135 type film, scratches are not generated on the image recording portion, which is particularly effective.

The photo film is wound around the take-up shaft by a close contact guide, and the exit of the photo film of the close contact guide is moved to the next photo film by the end of the photo film making one round of the take-up shaft. The peripheral speed of the take-up shaft is set to be higher than the feed speed of the photographic film by bringing the photographic film close to the wrap position where the photographic film is to be wound, and the photograph is taken to the wrap position while the leading end of the photographic film passes through the close contact guide. Since the film is wound around the winding shaft, it is possible to reliably prevent the film from being scratched.

Since the leading end of the photographic film, which is arranged apart from the peripheral surface of the winding shaft, guides the leading end of the photographic film toward the close contact guide, the film is loosened by the leading end guide. Can be guided to the close contact guide. By using the slack portion of the film, the film can be reliably wound around the winding shaft when the leading end of the film exits the close contact guide due to the difference between the peripheral speed of the winding shaft and the feeding speed of the film.

Since the contact guide has a pressing roller which resiliently contacts the winding shaft, the resistance at the time of guiding the leading end of the film can be reduced. Also,
By forming the pressing roller from the first and second pressing rollers provided apart in the circumferential direction of the winding shaft, the resistance at the time of guiding is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of a film carrier according to the present invention.

FIG. 2 is a perspective view schematically showing a film transport mechanism.

FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, showing a film accommodating portion at the start of film winding.

FIG. 4 is a cross-sectional view taken along line III-III in FIG. 2 showing the film accommodating portion when the film is wound around a winding shaft.

FIG. 5 is a perspective view schematically showing a film winding mechanism of a film accommodating portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Film carrier 13 Film accommodating part 16, 25 Film 45 Take-up shaft 46 Tip guide 47, 48 Press roller 49 Adhesion guide 51 Shaft 52 Rubber lining 53 Spring 55 Torque limiter 56 One-way clutch 57 Take-up motor

Claims (8)

[Claims] 1. When a photo film is wound around a winding shaft,
A winding method of a photographic film, wherein the photographic film is wound around the winding shaft without slack before the leading end of the photographic film makes one round around the winding shaft. 2. The photo film is wound around the take-up shaft by a close-contact guide, and the exit of the photo film of the close-contact guide is wound around the take-up film by the end of the photo film making one round around the take-up shaft. The peripheral speed of the winding shaft is set to be higher than the feed speed of the photo film, and the photo film is moved to the winding position while the leading end of the photo film passes through the close contact guide. 2. The method according to claim 1, wherein the film is wound around a winding shaft. 3. The photographic film according to claim 2, wherein the leading end of the photographic film is guided toward the close contact guide by a leading end guide of the photographic film arranged apart from the peripheral surface of the winding shaft. Winding method. 4. A winding device for winding a sent photo film around a take-up shaft, wherein the leading end of the photo film makes a round around the take-up shaft and is wound around the photo film. A close contact guide that presses the photo film against the peripheral surface of the take-up shaft and tightly winds the photo film, and rotates the take-up shaft at a peripheral speed higher than the feed speed of the photo film, Due to this speed difference, while the leading end of the photographic film passes through the close contact guide, a winding shaft drive unit that closes the photographic film to the winding shaft up to the winding position and winds the film, And a leading end guide for guiding a leading end of the sent photographic film to the close contact guide. 5. The close-contact guide includes first and second pressing rollers that resiliently contact the take-up shaft and are separated from each other in a circumferential direction of the take-up shaft. In the vicinity of the start position of the close contact pressing to the winding shaft, the first
5. The photographic film winding device according to claim 4, wherein a pressing roller is disposed, and a second pressing roller is disposed near a position where the photographic film is pressed against the winding shaft by the close contact guide. 6. The photographic film winding device according to claim 4, wherein the winding shaft drive unit has a torque limiter that idles when a winding load increases. 7. The photographic film winding device according to claim 6, wherein the winding shaft drive unit has a one-way clutch between the torque limiter and the winding shaft. 8. A film carrier for feeding an object frame of a photographic film to a reading optical axis or a printing optical axis to read or print an image, wherein the winding of the photographic film according to any one of claims 4 to 7. A film carrier comprising a device.